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73 lines
3.2 KiB
Python
73 lines
3.2 KiB
Python
load('beaver.sage')
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import random
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N = 2
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def sum_shares(shares, source, party_id):
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zero_share = AuthenticatedShare(0, source, party_id)
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for share in shares:
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zero_share += share
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return zero_share
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source = Source(p)
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points = [CurvePoint.random() for _ in range(0, N)]
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scalars = [random.randint(0,p) for i in range(0, N)]
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expected_msm = sum([p*s for p, s in zip(points, scalars)])
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lhs_points = [pt - CurvePoint.random() for pt in points]
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rhs_points = [point - lhs for (point, lhs) in zip(points, lhs_points)]
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lhs_points_shares = [ECAuthenticatedShare(pt) for pt in lhs_points]
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rhs_points_shares = [ECAuthenticatedShare(pt) for pt in rhs_points]
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assert [lhs_pt_share.authenticated_open(rhs_pt_share) for lhs_pt_share, rhs_pt_share in zip(lhs_points_shares, rhs_points_shares)] == points
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lhs_scalars = [s - random.randint(0,p) for s in scalars]
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rhs_scalars = [s - lhs for (s, lhs) in zip(scalars, lhs_scalars)]
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lhs_scalars_shares = [AuthenticatedShare(s, source, 0) for s in lhs_scalars]
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rhs_scalars_shares = [AuthenticatedShare(s, source, 1) for s in rhs_scalars]
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assert [lhs_scalar_share.authenticated_open(rhs_scalar_share) for lhs_scalar_share, rhs_scalar_share in zip(lhs_scalars_shares, rhs_scalars_shares)] == scalars
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## sas
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#print('lhs sas')
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lhs_sas_shares = [ScalingECAuthenticatedShares(lhs_points_share, rhs_scalars_share, source.triplet(0), 0) for lhs_points_share, rhs_scalars_share in zip(lhs_points_shares, lhs_scalars_shares)]
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#print('rhs sas')
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rhs_sas_shares = [ScalingECAuthenticatedShares(rhs_points_share, rhs_scalars_share, source.triplet(1), 1) for rhs_points_share, rhs_scalars_share in zip(rhs_points_shares, rhs_scalars_shares)]
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#
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lhs_sas_de = [[lhs_sas_i.d.copy(), lhs_sas_i.e.copy()] for lhs_sas_i in lhs_sas_shares]
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print("lhs_sas_de: {}".format(lhs_sas_de))
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rhs_sas_de = [[rhs_sas_i.d.copy(), rhs_sas_i.e.copy()] for rhs_sas_i in rhs_sas_shares]
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lhs_sas = [lhs_sas_i.mul(rhs_sas_de_i[0], rhs_sas_de_i[1]) for lhs_sas_i, rhs_sas_de_i in zip(lhs_sas_shares, rhs_sas_de)]
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rhs_sas = [rhs_sas_i.mul(lhs_sas_de_i[0], lhs_sas_de_i[1]) for rhs_sas_i, lhs_sas_de_i in zip(rhs_sas_shares, lhs_sas_de)]
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mul_sas = [lhs_i.authenticated_open(rhs_i) for lhs_i, rhs_i in zip(lhs_sas, rhs_sas)]
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assert sum(mul_sas) == expected_msm
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## msm
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#print('lhs msm')
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lhs_msm = MSM(lhs_points_shares, lhs_scalars_shares, source, 0)
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#print('rhs msm')
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rhs_msm = MSM(rhs_points_shares, rhs_scalars_shares, source, 1)
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lhs_msm_de = [[point_scalar.d, point_scalar.e] for point_scalar in lhs_msm.point_scalars]
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print("lhs_msm_de: {}".format(lhs_msm_de))
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rhs_msm_de = [[point_scalar.d, point_scalar.e] for point_scalar in rhs_msm.point_scalars]
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res = []
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lhs = lhs_msm.msm(rhs_msm_de)
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rhs = rhs_msm.msm(lhs_msm_de)
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#assert lhs_sas == lhs_msm.point_scalars, print('sas: {}, msm: {}'.format(lhs_sas, lhs_msm.point_scalars))
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#assert rhs_sas == rhs_msm.point_scalars, print('sas: {}, msm: {}'.format(rhs_sas, rhs_msm.point_scalars))
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print('msm: {}'.format(lhs_msm.point_scalars))
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print('sas: {}'.format(lhs_sas))
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result = sum([lhs_pt_scalar.authenticated_open(rhs_pt_scalar) for lhs_pt_scalar, rhs_pt_scalar in zip (lhs_msm.point_scalars , rhs_msm.point_scalars)])
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res = lhs.authenticated_open(rhs)
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assert result == res
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assert res == expected_msm, 'res: {}, expected: {}'.format(res, expected_msm)
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